Flushing Water Heater-need to turn off supply?

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Ken Sturtz

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Hello All. I have a Rheem 40 gal electric water heater, 6yrs old and thought I would flush it, Every instruction I have read says to turn off the water supply and the power-----Why? I can easily cut the power, no big deal. BUT why do they advise to turn off the water supply? Itseems to me I would want water flow to help the flush? and if I can leave the water supply on, what is the danger to leaving the power on? Thanks All
 

Terry

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Leave the water on, it does a much better job a blasting out the sediment.
When I change out a water heater, I always start the flush with the water on.
 
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